W49V002中文資料華邦電子數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

The W49V002FA is a 2-megabit, 3.3-volt only CMOS flash memory organized as 256K ′8 bits. The device can be programmed and erased in-system with a standard 3.3V power supply. A 12-volt VPP is not required. The unique cell architecture of the W49V002FA results in fast program/erase operations with extremely low current consumption. This device can operate at two modes, Programmer bus interface mode and FWH bus interface mode.

FEATURES

· Single 3.3-volt operations:

- 3.3-volt Read

- 3.3-volt Erase

- 3.3-volt Program

· Fast program operation:

- Byte-by-byte programming: 50 mS (typ.)

· Fast erase operation: 150 mS (typ.)

· Fast read access time: Tkq 11 nS

· Endurance: 10K cycles (typ.)

· Twenty-year data retention

· Hardware data protection

- #TBL & #WP serve as hardware protection

· One 16K bytes Boot Block with lockout protection

· Two 8K bytes Parameter Blocks

· Four main memory blocks (with 32K bytes, 64K bytes, 64K bytes, 64K bytes each)

· Low power consumption

- Active current: 40 mA (typ. for FWH)

· Automatic program and erase timing with internal VPPgeneration

· End of program or erase detection

- Toggle bit

- Data polling

· Latched address and data

· TTL compatible I/O

· Available packages: 32L PLCC, 32L STSOP